638280

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{197}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 2156220

約数和(自身を除く): 1517940

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 197, 216, 270, 324, 360, 394, 405, 540, 591, 648, 788, 810, 985, 1080, 1182, 1576, 1620, 1773, 1970, 2364, 2955, 3240, 3546, 3940, 4728, 5319, 5910, 7092, 7880, 8865, 10638, 11820, 14184, 15957, 17730, 21276, 23640, 26595, 31914, 35460, 42552, 53190, 63828, 70920, 79785, 106380, 127656, 159570, 212760, 319140, 638280]

約数ペア:

[(1, 638280), (2, 319140), (3, 212760), (4, 159570), (5, 127656), (6, 106380), (8, 79785), (9, 70920), (10, 63828), (12, 53190), (15, 42552), (18, 35460), (20, 31914), (24, 26595), (27, 23640), (30, 21276), (36, 17730), (40, 15957), (45, 14184), (54, 11820), (60, 10638), (72, 8865), (81, 7880), (90, 7092), (108, 5910), (120, 5319), (135, 4728), (162, 3940), (180, 3546), (197, 3240), (216, 2955), (270, 2364), (324, 1970), (360, 1773), (394, 1620), (405, 1576), (540, 1182), (591, 1080), (648, 985), (788, 810)]